A movie serial in 13 chapters, and Lionel Atwill's final film: Following the end of WWII, war-monger Sir Eric Hazarias sets the wheel in motion for WWIII. His search for Meteorium 245, the only practical defence against the atomic bomb, leads him to mythical Pendrang. Obstructing his sinister plan to rule the world are Rod Stanton, United Peace Foundation investigator, Tal Shan , Pendrang native, and Marjorie Elmore, daughter of scientist Dr. Elmore, unwilling assistant to Sir Eric.

A demented archaeologist discovers a living, breathing serpent creature known to the Aztecs as Quetzalcoatl and accidentally kills his wife by giving her one of the beast's feathers, causing the creature to track her down and slaughter her. Using this knowledge he exacts revenge upon his enemies by placing one of the feathers on his intended victim and letting the beast loose to wreak havoc.

Government agents work to interfere with schemes to trick the Comanches into war with the Texans.

A U. S. Marines dog is returned to his young owner in the small town of Monrovia at the end of WWII, but a grouchy neighbor believes the animal's military training makes him a threat to the community and files charges to have the dog destroyed.

The life of American public enemy number one who was shot by the police in 1934.

The latest assignment for respected detective Charlie Chan has come directly from the government and involves the disappearance of a scientist named Harper, who was working on an extremely important serum. When the scientist is killed, Chan must sort through all very likely suspects, including the man's sister and his butler.

Hoot Gibson and Bob Stanley ride into Arizona seeking the killer of Bob's father, who managed the stagecoach line in Eggleston for Kelso McGuire.

This one finds Jack Slade and Mary Conway,alias Blanche, being recognized as known and wanted crooks by deputy marshal Harry Stevens and, when he orders them out of town, Slade kills him. His son, Bob Stevens and friend Parkford become U.S. Marshals and proceed to rid the town of the cut-throat gang that has been terrorizing the citizens. Bob goes undercover as an outlaw and works his way into the gang, while Hoot poses as a Dude who goes about making fiery speeches on behalf of law and order.